About 10,000 participants will be enrolled into this retrospective study. Study coordinators will include both men and women over the age of 18 who had angiographic proved triple-vessel disease in a 15 years long-term. Detailed procedural data will be obtained by the study coordinator and local principal investigator. These data will be entered into the electronic data capture system. Participants will have telephone follow-up interviews conducted by the centralized follow-up center at Fuwai Hospital.